Township police Superintendent James Farringer says the tank had been drained for painting. The worker was hurt when scaffolding collapsed about 12:30 p.m. inside the tank atop the tower, about 200 feet high.

The name of the worker and the contractor he works for haven't been released, but they were hired by the Fox Chapel Water Authority.

Donald Kendrick, an operations supervisor with the authority, says the man was complaining of a possible broken arm and a back injury.